I'm gonna do this as well. For years that has two studio albums (or in 2015's case studio album and a mini), I will choose two favs (one from each) because I really can't decide between November and Last Links which one is better for 2010. :'D Anyways, here it goes:
1995: "LIMIT"
1998: "Trust"
1999: "POWDER SNOW" / "monochrome"
2000: "SURREAL"
2001: "Endless sorrow" (Original mix)
2002: "Naturally" / "HANABI"
2003: "ourselves"
2004: "INSPIRE"
2005: "fairyland"
2006: "(miss)understood" / "It was"
2007: "talkin' 2 myself"
2008: "GREEN"
2009: "Sparkle"
2010: "Last Links" / "November"
2011: "ANother song feat. URATA NAOYA"
2012: "Tell me why"
2013: "Missing"
2014: "Lelio"
2015: "Last minute" / "Sorrows"
Yep, I think that's it. And no, you didn't see wrong. ANother song is on my list. I find it awesome~